Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Beyond the annotations (readOnly=false, destructive=false, openWorld=true) it discloses non-obvious behavior: pending-request caps (ORDER_REQUEST_LIMIT), server-side re-validation of price/stock/region/rail with hard-fail on drift, the fact that no money moves at approval time, and idempotent retry semantics with duplicate_reason. That is exactly the kind of context annotations cannot carry.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loaded with the core action, then organized into short bullet-like fragments covering batch, approval, and idempotency. Information density is high, but the compressed phrasing and untranslated 再买一份 make a few lines harder to parse than they need to be.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a mutating, open-world tool with an output schema, it covers the essential lifecycle: queue → human approval → server re-validation → order creation → payment by human. Minor gaps: it doesn't state that one of draft_id/draft_ids is effectively mandatory (schema marks zero required), and it references an auto_approved flag absent from the schema.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the baseline is 3; the description goes further by explaining draft_ids as one-per-seller with all-or-none semantics and a single approvals page, and by clarifying the idempotency/retry contract. One flaw: it references an auto_approved parameter that does not appear in the input schema, which could confuse an agent assembling arguments.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The opening clause states a precise verb and resource: submit drafts into the human's approval queue, with the required OAuth scope named. It also makes clear that this tool normally queues rather than purchases ('Queues only — unless auto_approved:true'), which functionally separates it from webaz_place_order/webaz_buy, though it never names those siblings explicitly.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

It gives clear triggering context (an existing odr_/ogd_ draft, single or batch) and the exception path (auto_approved small-order rule → order created, pay next). It also states the retry vs. re-purchase distinction (idempotency vs. 再买一份). What's missing is an explicit 'use webaz_place_order / webaz_quote_order instead when…' routing statement.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.